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Carbon capture and storage with lipid production in integrated system of aqueous ammonia with marine mutant Synechococcus PCC 7002 IIUM01

Azmi, Azlin Suhaida and Awan, Mohamed Anwar and Amid, Azura and Mohamad Puad, Noor Illi and Ali, Fathilah (2020) Carbon capture and storage with lipid production in integrated system of aqueous ammonia with marine mutant Synechococcus PCC 7002 IIUM01. Biological And Natural Resources Engineering Journal, 3 (1). pp. 14-27. E-ISSN 2637-0719

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Carbon capture and storage (CCS) involves capturing, transporting and storing CO2 geologically underground permanently. Carbon capture using solvent such as amine and aqueous ammonia has been extensively studied by many researchers. However, this capture technology for CCS scheme is costly. As an alternative, CO2 emission can be cost-effectively captured and stored by utilizing the well-understood natural photosynthetic process of marine cyanobacteria. In contrast, the capturing process using cyanobacteria is very slow compared to the chemical absorption mentioned prior. Hence, this study aimed to investigate carbon capturing and storing process using integrated aqueous ammonia and mutated marine cyanobacteria (Synechococcus PCC 7002 IIUM01). The conditions that can maximize CO2 reduction under various conditions; CO2 flow rate (Lpm), absorption temperature (C) and aqueous ammonia concentrations (% (w/v)) were to be identified. The effectiveness of the mutant cyanobacteria was quantified by measuring the cell concentration, percentage reduction in CO2 concentration and lipid content. Synechococcus PCC 7002 IIUM01 showed it robustness by growing in aqueous ammonia solution at the concentration of 0.5 to 1% (w/v) at which the parent strain was not able to tolerate. The best conditions in maximizing CO2 capture and storage while sustaining growth optimally and being a potential biofuel source was observed at 0.5 Lpm of 15% CO2 gas flow rate, 0.75% (w/v) of ammonia concentration and 33C of absorption temperature. At this specified condition, around 68% of CO2 removal was achieved with 9% (w/w) yield of lipid and more than 13% (w/v) of cell concentration obtained.

Item Type: Article (Journal)
Additional Information: 5339/82829
Uncontrolled Keywords: Ammonia, Carbon dioxide, Cyanobacteria, Lipid, Mutant, Synechococcus PCC 7002.
Subjects: T Technology > TP Chemical technology
T Technology > TP Chemical technology > TP155 Chemical engineering
T Technology > TP Chemical technology > TP248.13 Biotechnology
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): Kulliyyah of Engineering > Department of Biotechnology Engineering
International Institute for Halal Research and Training (INHART)
Kulliyyah of Engineering
Depositing User: Mrs. Azlin Suhaida Azmi
Date Deposited: 11 Sep 2020 11:15
Last Modified: 11 Sep 2020 11:15
URI: http://irep.iium.edu.my/id/eprint/82829

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